共 4 条
- [1] CARBONE A, 1987, INDIAN J PURE AP MAT, V18, P1082
- [2] Jungck G., 1986, Internat. J. Math. Math. Sci., V9, P771, DOI [DOI 10.1155/S0161171286000935, 10.1155/S0161171286000935]
- [3] Jungck G., 1988, INT J MATH MATH SCI, V11, P285
- [4] Liu Z., 1993, J LIAONING NORMAL U, V16, P1